Studies on carboxymethyl derivative and cellulose obtained from cassava residue
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Date
1988
Authors
Ogunlesi, M.
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Abstract
Cassava residue, the material obtained after aqueous extraction of starch from pulverized cassava tubers, was converted to the carboxymethyl derivative of various acid capacities. The acid capacity in 1M KCl was in the range of 0.1 to 0.73 meq/g of dry material while the corresponding value for the underivatized material was 0.03meq/g. The haemoglobin capacity was 214mg/g for the highest substituted derivative , 114mg/g for the least substituted and 60mg/g for the underivatized material. The cellulose contained in the cassava residue had been extracted by a process consisting of enzyme hydrolysis, dissolution in phosphoric acid and regeneration in sodium hydroxide. The acid capacity and protein capacity of the regenerated cellulose show that it compares well with chromatographic – grade cellulose. The cassava residue was derivatized to give the acetate.
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Staff publications
Keywords
Cassava residue , Sodium hydroxide , Enzyme hydrolysis , Cellulose , Research Subject Categories::NATURAL SCIENCES::Chemistry
Citation
Ogunlesi, M. (1988). Studies on carboxymethyl derivative and cellulose obtained from cassava residue.